Here's what rhymes with gamm.
                        
                        
                    
                                am  cam  dam  damn  gram  jam  lamb  ham  ram  sham  clam  lam  nam  tam  cram  gramme  yam  jamb  scam  wham  glam  exam  swam  slam  tram  dram  pram  spam  scram  flambe  buckram  cofferdam  diagram  epigram  quondam  anagram  doorjamb  grandam  diaphragm  telegram  kilogram  hologram  milligram  monogram  mammogram  ideogram  sonogram  histogram  diazepam  hexagram  cablegram  radiogram  pentagram  centigram  kissogram  cardiogram  parallelogram  electrocardiogram  electroencephalogram  Words that almost rhyme with gamm
an  can  gang  ang  kan  kann  ann  gan  than  man  ran  van  hang  ban  clan  fan  pan  rang  sang  scan  tan  bang  dan  shan  yang  gran  lang  langue  nan  pang  san  tang  chang  clang  dann  fang  lan  dang  began  plan  span  slang  bran  harangue  cyan  flan  saran  prang  sprang  sedan  divan  rattan  japan  outran  shebang  rehang  caravan  overhang  overran  boomerang  anchorman  bogeyman  boogeyman  whizzbang  fisherman  journeyman  catamaran  minivan  turbofan  weatherman  counterman  paperhanger  middleman  handyman  nurseryman  serviceman  radioman  minuteman  orangutang  businessman  newspaperman  assemblyman  pleonasm